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Question 1 a) Clapeyron equation is widely used to determine the enthalpy/entropy change of vaporization. For 1-butene it determines the entropy change of vaporization value of 45.145 J/mol at 90C. It is required to determine the second virial coefficient in cm/mol for 1- butene at the given temperature. The vapor pressure equation is given as follows: 4350.2 2 Inpsat (Pa) = 68.49 - 7.4124 InT + 1.0503 x 10-5 12 + 12 where T is in K. 19 marks) b) A vapor liquid equilibrium mixture of water(19/1,4-Dioxane(2) is brought to a condition of 90 C and 101.3 kPa. If the mixture contains 55% of 1,4-Dioxane in the feed then determine what fraction of the feed is vaporized as vapor? For this kind of system, modified Raoult's law is more appropriate rather than simple Raoult's law. Use NRTL where applicable [16 marks)